We're fishing and eating the tuna to extinction. Unless you've been living under a rock you've probably already heard that. But then we do hear that, don't we? Cod, shrimp, salmon. Seafood in general, right? We eat/fish/farm too much and it's bad and we should stop but this one piece of salmon fillet won't matter and isn't it delicious?

But the animals we are eating to extinction have never, to my knowledge, been so endangered that CITES has been mentioned and international bodies have stepped in to make fishing a species illegal. That's how bad it is.

So on Thursday 18 March when the Convention on International Trade in Endangered Species in Doha, Qatar voted overwhelmingly to reject the ban on trade in tuna (and polar bears, incidentally), I was upset.

So go enjoy your tuna fish sandwich, while you can. Please make sure it's served with a generous helping of shame and a sprinkling of doom, because we all know that one species affects another and that this is bad news for more than just tuna.